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张彪其

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[问答]

SPV1040细分测量引脚3上的输入阻抗非常低

亲爱的大家,

我们在太阳能电池板能量采集板上的实施中注意到了SPV1040的故障。细分仅适用于某些董事会。在这里您可以看到配置。

太阳能电池板是一对单晶硅http://eshop.terms.eu/_data/s_3386/files/1379942540-sunpower_c60_bin_ghi.pdf
串联配置。为了在低光照条件下获得更好的性能,我们引入了一个与CINsns_2并联的100nF电容。
威廉希尔官方网站 出现故障时,我们可以测量引脚3(Lx)上的输入阻抗非常低,而不是工作单元的大约6K欧姆。这可以帮忙吗?
谢谢。
#spv1040

以上来自于谷歌翻译


以下为原文




Dear all,

we are noticing breakdown of SPV1040 in our implementation on a board for energy harvesting from solar panel. The breakdown is only for some board. Here you can see the configuration.

The solar panel is a couple of mono crystalline silicon http://eshop.terms.eu/_data/s_3386/files/1379942540-sunpower_c60_bin_ghi.pdf
in series configuration. For better performance in low-light condition, we introduce a 100nF capacitor in parallel to CINsns_2.
When the circuit exhibit the breakdown, we can measure an input impedance on Pin 3 (Lx) very low, instead of about 6KOhm of a working unit. Can this help?
Thank you.  
#spv1040

回帖(1)

李涛

2019-2-20 17:06:13
你的输出电压是多少?我假设你已经看到了最大值为4.8V的地方没有你威廉希尔官方网站 中没有的外部二极管。如果你试图在没有二极管的情况下超过4.8V,我希望你会遇到问题。无论他们是否永久,我都不能说。
 
 
您在哪里找到设置电阻值的信息?我一直试图向ST询问这部分内容。在电话中,他们拒绝回答任何问题,只提到我们的在线提交表格。但是,这不起作用。

以上来自于谷歌翻译


以下为原文





What is your intended output voltage?  I assume that you have already seen where the maximum is 4.8V without the external diode which is not present in your circuit.  I expect you would have issues if you attempted to go past 4.8V without that diode.  Whether or not they are permanent I can't say.


Where did you find the information to set the values of the resistors?  I have been trying to ask ST about this part.  On the phone they refused to answer any questions and only referred me to their online submission form.  However, that doesn't work.
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